Some beginner gameplay and strategies questions

[Legendary League]

The only way to guarantee it is to have the mage and thug be the only two units on the field, and for them to share the same AoE (I believe). Another way to guarantee it is to communion slave the thug and have the masters cast self-buffs like personal luck, which will affect the thug that way (be careful of building up too much fatigue on them though). Other than that, I'm not sure how the AI scripts spell cast locations.

[Shangrila00]

Regarding Dominion, more temples increase your max dominion and holy points. However, your dom spread doesn't increase so far as anyone knows. So at dom 2, only 1 in 5 temple checks will produce a candle. Needless to say, that's pretty bad. Anyone that seriously makes an effort to domkill you will do it very easily even without blood sac simply with stone idols and preaching unless you are a nation with strong priests or better yet inquisitor priests. And even with strong priests, and tons of recruitment turns given to recruiting priests, you are unlikely to see your scales in much of your empire. That might not be such a terrible thing if you have absolutely awful scales.